A 50.0 mL sample of an aqueous H2SO4 solution is titrated with a 0.375 M NaOH solution.?

A 50.0 mL sample of an aqueous H2SO4 solution is titrated with a 0.375 M NaOH solution. The equivalence point is reached with 62.5 ml of the base. The concentration of H2SO4 is __________ M.